advertising signs can be roughly divided into: neon signs (retired), inkjet signs, exposed luminous characters, acrylic luminous characters, resin luminous characters, mini luminous characters, display signs, and more popular led colorful screen signs in recent years. Neon lamps have been retired for some years, and 99% signboards on the market are illuminated by led light sources. As for why neon signs will be retired, and what advantages led light sources have, this is already a commonplace topic. Just ask Du Niang, and there is not much waste of ink here. Ink-jet signboard has a long history, and it has been used ever since because of its low price, simple production and construction and excellent advertising effect. However, with the improvement of people's quality of life, the aesthetic concept has also been constantly improved, and it is difficult to leave a relatively new impression only by painting signboards, especially in the production of door signboards. With the appearance of led light source, the luminous characters with led as the luminous core have developed rapidly. Until today, the types of led luminous characters are no longer monotonous. In addition to the common acrylic luminous characters, exposed light characters and led light boxes, there are still many, such as resin word, acrylic mini Seiko characters and so on, which can be described as varied.

there are two kinds of techniques for making advertising signs: traditional techniques and modern techniques. The traditional techniques generally refer to carving and spray painting, but now the techniques generally include blister light box making and LED billboard making. From a global perspective, acrylic advertising signs are the most widely used. They are not only beautiful and generous, but also have a good night vision effect and are relatively cheap. Compared with acrylic luminous characters, punching and exposing luminous characters are generally used to make super-large luminous characters, because acrylic luminous characters are made by cutting acrylic plates. When the luminous characters are larger than 3 meters, some strokes need to be spliced by multiple pieces of acrylic, which affects the appearance. Because of a layer of acrylic plates, the luminous is relatively soft. Generally, the installation height of super-large luminous characters is relatively high, and the sight distance is relatively long, while the light source of exposed luminous characters is exposed, with high brightness, which is suitable for viewing from a long distance. Punching luminous characters can be made of stainless steel, aluminum plate or zinc iron according to the site conditions. Therefore, it is recommended to use exposed luminous characters for larger luminous characters. When the luminous characters are smaller, such as luminous characters of several centimeters, signboards at the door or small luminous characters used at the counter of shopping malls, because the strokes are thin, and the acrylic luminous characters are built-in light sources, the exposed luminous characters also need enough space to be inserted with led lights, and the small characters are often unable to be made due to technological limitations, so the resin luminous characters make up for this. Small luminous characters can also use mini luminous characters. Led colorful screen signboard, led colorful screen signboard can display pictures, words and videos just like led display screen, but the difference is that led colorful screen pixels are relatively low, but the cost performance is very high, and the surface of colorful screen can be installed with luminous characters, which is a tall advertising signboard during the day and a dazzling display screen at night. The price per square meter is only 11%~31% of the led display. Moreover, the larger the dazzle color screen, the higher the installation height, and the cheaper the unit price. When the sight distance and area exceed a certain range, the display effect can be completely comparable to that of the display screen. The characteristics of colorful screen signboards can be summed up in four sentences: "a picture during the day and a screen at night;" The enjoyment of the display screen, the price of neon lights. " ?